Property, Buildings and Equipment, Net (Schedule of Property, Buildings and Equipment) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Property, Plant and Equipment [Line Items]
Net property, buildings and equipment	$ 131,071	$ 122,834
Depreciable Assets [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	121,486	108,861
Less accumulated depreciation and depletion	(71,857)	(65,220)
Net property, buildings and equipment	49,629	43,641
Breeding herd [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	12,234	10,062
Buildings [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	11,587	10,975
Citrus trees [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	34,188	33,164
Sugarcane [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	16,199	12,617
Equipment and Other Facilities [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	47,278	42,043
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property, buildings and equipment	$ 81,442	$ 79,193